As it originally announced back in July, Apple has confirmed that it plans to release Swift 3.1 sometime during the Spring of 2017. Following the Swift 3.1 release, focus will shift to Swift 4. Swift 3.1 is intended to be source compatible with Swift 3.0. It will contain a few additive enhancements to the core language as well…
via Apple reiterates plans for Swift 3.1 release in Spring 2017, offers new details on changes — 9to5Mac
